Grafts

Would a a fiendish graft work outsiders such as fiends? If the grafts would work on a fiend then would following penalty disappear? When a character with a fiendish grafts interacts with a non evil NPCs, a -6 circumstance penalty is applied on all Charisma-based checks. This penalty applies even if the NPC is unaware of the graft presence, since this is a subtle-twisting of the host's personality.

How good are the elemental grafts? Would the element grafts be of any good to a character that is going to take the PrCs Elemental Savant and Elemental Archon